/*
 *  Project1.Ch3.txt 
 *  By: John Stile
 *  (a) Write a function named getfl that asks the user for a float number and returns the value to whereever the function is called.
 *  (b) Write a program that employs getfl five times to obtain five floati values from the user, assigning each to different variables.
 *  (c) Output the 5 numbers and their average.
 */
#include <stdio.h> // include functions from stidio.h when compiling this program
#define NUM 5    // preprocessor will search and replace NUM with 5 before compiling program.

float getfl(void) // header for function getfl, takes nothing, returns an float.
{ 
  float number; // declare variable number that will store a float.
  printf("Please enter a number: "); // Ask the user for input
  scanf("%f", &number );  // record  input in float 
  return number; // return value in number to the calling function
}

int main(void)
{
  float numbers[NUM];  // declare an array of floats with 5 members.
  int i;  // declare an int variable named i. i will be used in a for loop.
  float average;  // declare the floating point variable average. 
  float total=0;  // declare the floating point variable total, to hold sum of all enteries, and assign value of 0.

  // call the function getfl five times, 
  // each time assing the return value to an element of the array numbers.
  for(i=0; i<NUM; i++){
    numbers[i] = getfl();   
    total=total+numbers[i];
  } 
 
  average= (total/NUM);  // calculate average, and assign to variable average
  
  printf(" The numbers entered: %s", numbers); // print header
  for(i=0; i<NUM; i++){               // cycle through the array
    printf("%f ", numbers[i]) ;     // print each element
  }
  printf("\n"); // Add a new line at the end.

  printf(" The average is: %f\n", average); // Print the average
 
  return 0; // return int 0 to calling program.
}